Improvement in mold-boards for plows



J; w. FIELDS. Mold-Board for Plows.

No. 223,124. Patented Dec. 30,1879.

WITNESSES'W INVEN'IOR M 2/r/ BY ATTORNEYS.

N. PETERS. ,PHOTO LITNQGRAPHER. WASHINGYON, D C.

UNITED STATES PATENT OFFICE.

JOHN W. FIELDS, or SHERMAN, TEXAS.

IMPROVEMENT IN MOLD-BOARDS FOR FLOWS.

Specification forming part of Letters Patent No. 223,124, dated December30, 1879 application filed September 1, 1879.

To all whom it may concern Be it known that 1, JOHN WV. FIELDS, ofSherman, in the county of Grayson and State of Texas, have invented anew and Improx'ed Mold-Board for Plows, of which the following is aspecification.

Figure l is a top view of the mold-board. Fig. 2 is a sectional view online at as, Fig. 1; and Fig. 3 is a perspective view of the device.

Similar letters of reference indicate corres iionding parts.

The object of this invention is to provide a device for supplying waterand air to the face and land-side of a mold-board, to prevent the earthfrom adhering to them; and it consists in perforating the mold-board andland-side with small holes and attaching to the hack of the mold-board awater-reservoir and a piston and pump or other device for forcing waterand air through the perforations, so as to lubricate the faces of theplow, and thus prevent the adhesion thereto of earth.

In the drawings A represents the face of the moldboard, provided withperforations a a through the face A of the board, and through theland-side F also, as shown in Figs. 1 and 2, respectively.

B represents the chamber or reservoir attached to the back of themold-board, for containing the water or air.

0 represents the force-pump, and D the piston, through and by which airand water may be forced through the perforations a a. E is the usualstandard by which the mold-board is attached to the plow-beam.

The piston D may be of sufficient weight to press downward and force thewater outgradually, or rapidly enough under the ordinary conditions ofplowing the peculiar soil of Texas, for which this device is especiallyintended; but should the perforations become clogged the piston D may beforced down with sufficient power to clear the holes a a at once.

The device is equally applicable to moldboards of every description.

I am aware that a perforated wooden moldboard having at its back arecessto contain oil is not new; hence I do not claim it; but,

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The combination of a water and air chamher and aforce-pump with a metallic perforated lllOld -bOZLId and land-side, inthe manner substantially as herein described.

JOHN W. FIELDS.

Witnesses:

GEO. M. SUTHERLAND, J T. CUNNINGHAM.

